Blair Brown has admitted that she is excited about the season finale of Fringe.

Brown, who plays Nina Sharp in the show, explained that the story is always unpredictable.

In a video posted on the show's website, she said: "I think what's amazing now about these last eight before we begin the third season is that each episode is quite unique, quite different from the others.

"All of it is in quest of Peter [Joshua Jackson] finding out the truth and his response to that but the way in which it's done each episode... one goes here, one goes there, one goes there, one goes there."

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She also claimed that the finale will examine the connection between the two worlds.

"That's where we're headed in this eight," she said. "And what will be interesting to see in the finale is how that happens, what happens, who it happens to."

Meanwhile, her co-star John Noble, who plays Walter Bishop, promised that the show will lead up to an exciting climax.

"People will remember who watched season one - we went along and then we started to head home about the last five or six episodes," he said. "And we're doing the same again this year, which really builds through to a crashing, crashing finale."

Fringe continues Thursdays at 9pm on Fox in the US and Tuesdays at 10pm on Sky1 in the UK.